Speaker



FIG. 1 is a front perspective view of a speaker in accordance with our new design;

FIG. 2 is rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a left side elevational view thereof, the right side elevational view being a mirror image.

A right side view appears symmetric with the left side view. 

The ornamental design for a speaker, as shown and described. 